U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 244/78.1 - Fluid


Subclass of Class 244 - Aeronautics and astronautics
Definition: Subject matter in which the device or system includes a
No. of patents: 24
Last issue date: 12/29/2009


NumberTitleIssue Date
7637458Systems and methods for providing back-up hydraulic power for aircraft, including tanker aircraft
Systems and methods for providing back-up hydraulic power for aircraft are disclosed. A system in accordance with one aspect of the invention includes a hydraulic supply line, a hydraulic return line, and a hydraulic actuator coupled between the supply line and the ...
12/29/2009
7367530Aerospace vehicle yaw generating systems and associated methods
Aerospace vehicle yaw generating systems and associated methods are disclosed herein. One aspect of the invention is directed toward a yaw generating system that can include an aerospace vehicle having a fuselage with a first portion and a second portion. The system...
05/06/2008
7338017Methods and apparatus for vibration and buffet suppression
Apparatus and methods for hybrid actuation and suppressing vibration are disclosed. In one embodiment, a hybrid actuator includes a first actuator and a second actuator linked to move a component a combined actuation distance. The first actuator may include a hydrau...
03/04/2008
7338011Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method
A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. A...
03/04/2008
7305297Controller for controlling a plant
The present invention provides a controller for controlling a modeled plant robustly against disturbance. The controller comprises an estimator and a control unit. The estimator estimates disturbance applied to the plant. The control unit determines an input to the ...
12/04/2007
7204197Mast wake reduction by shaping
A mast for use on a submarine is disclosed. The shape of the mast includes a sharp leading edge. The leading edge widens to an angle greater than the maximum angle of angle of attack that the mast will experience during maneuvering. The shape produces a stagnation z...
04/17/2007
7200484Controller for controlling a plant
The present invention provides a controller for controlling a modeled plant robustly against disturbance. The controller comprises an estimator and a control unit. The estimator estimates disturbance applied to the plant. The control unit determines an input to the ...
04/03/2007
7191593Electro-hydraulic actuator system
The system includes a hydraulic powered actuator. A pump system having first and second hydraulic lines is coupled to the first and second ports, respectively and is capable of providing hydraulic fluid to either the first and second lines. First and second pressure...
03/20/2007
7185857Thrust vector actuation control system and method
A thrust vector actuation control system and method is configured to allow self-testing of the entire actuation system and/or its individual system components. The control system also provides real-time, continuous monitoring of actuation system status, and allows s...
03/06/2007
7185859Aerospace vehicle yaw generating systems and associated methods
Aerospace vehicle yaw generating systems and associated methods are disclosed herein. One aspect of the invention is directed toward a yaw generating system that can include an aerospace vehicle having a fuselage with a first portion and a second portion. The system...
03/06/2007
7139643Control device with servocontrol loop, particularly an electro-hydraulic flight control actuator
A control device includes a main servocontrol loop having a servocontrolled system, and a compensation device on the input side of the control device. The control device includes an internal loop that receives a first signal derived from the main servocontrol loop a...
11/21/2006
7107757Aircraft provided with thrust reversers
Some but not all engines of an aircraft are provided with thrust reversers. A safety device disables, at least from the position corresponding to idling, the action of the throttles corresponding to the engines devoid of thrust reversers when the thrust reversers ar...
09/19/2006
7007897Flight control actuation system
A flight control actuation system comprises a controller, electromechanical actuator and a pneumatic actuator. During normal operation, only the electromechanical actuator is needed to operate a flight control surface. When the electromechanical actuator load level ...
03/07/2006
6651930Process and control system for an aircraft control surface actuated by multiple hydraulic jacks and with modular power
Control system for a control surface (100) of an aircraft comprising at least one actuator (102, 104) of the control surface, connected to a hydraulic circuit and equipped with at least two power jacks (110) capable of operating in at least one activated ...
11/25/2003
6625982Electronically controlled hydraulic actuating system
An electrically controlled hydraulic actuating system includes a servocontrol including a cylinder, a piston dividing the cylinder into two chambers each provided with a hydraulic connection port, a control valve connected to a hydraulic circuit. A two-wa...
09/30/2003
4826110Oscillatory failure monitor
Prevention of actuator oscillation due to failure mode in an aircraft pitch axis control system is provided by an oscillatory failure monitor. The oscillatory failure monitor provides power shutdown of the actuator through inner loop modeling and error si...
05/02/1989
4744532Aircraft flight control system
Flight control system for aircraft of the type provided with ailerons, elevators, upper surface spoilers, and upper surface air-brakes, a rudder and horizontal stabilizers with variable angle of incidence, said system comprising an electric control, in so...
05/17/1988
4667472Electric integrated actuator with variable gain hydraulic output
This invention relates to integrated electro-hydraulic actuators for use aboard aircraft or elsewhere. A balanced, double-acting hydraulic ram or motor (12) is connected between a support (16) and a member to be moved relative to the support. The ram incl...
05/26/1987
4615497Method and flutter brake for an aircraft
The invention relates to a method and an arrangement for the wings of a h speed aircraft, for increasing the flutter velocity. Aerodynamic auxiliary flaps or vortex generators are placed into an effective position in response to filtered sensor signals f...
10/07/1986
4461449Integral hydraulic blocking and relief valve
A hydraulic blocking valve for use in an aircraft flight power actuator employs a unique stepped piston design referenced to return pressure which provides pressure relief at a fixed value independent of system pressure....
07/24/1984
4173322Flutter prevention means for aircraft primary flight control surfaces
An apparatus attached to the flight control surface designed to lock the surface in a fixed and generally neutral position when a hydraulic pressure failure occurs. A spring loaded hydraulic actuator is mounted in the fixed wing structure but has an arm w...
11/06/1979
3992979Hydraulic actuating arrangements
A hydraulic actuator arrangement has a pair of double acting actuator devices coupled together for movement in unison. Each device has two control valves respectively operable to cause the device to move in opposite directions. The four control valves are...
11/23/1976
3986475Control arrangement
An arrangement for achieving effective steering and control of any type of vehicle employing hydraulic follow-up, as, for example, the rudder of a vessel, where the components thereof are so related that the rudder will automatically follow the true posit...
10/19/1976
3965798Adaptive actuator system
An adaptive actuator system comprising a rotatable shaft operatively coupled to a torque biasing means for biasing the rotational direction of the shaft, and also operatively coupled to a counter torque developing means for sensing the rotational bias of ...
06/29/1976
 
Sign InRegister
Username  
Password   
forgot password?